It seems to me that when it comes to growing and scaling their successful products, Google is data-driven. However when bringing new products to market Google basically has been driven by what leadership thinks is interesting/important, instead of analyzing what the market wants.

Sometimes they hit a big opportunity like Gmail and it grows like crazy, but a lot of the time there's actually no market for their product, or the technology is nowhere near ready to work at scale. This leads to a lot of canceled projects.